Hot on the heels of United's announcement to drop fees for "last minute" awards tickets, Delta chimes in with changes to their own frequent flyer SkyMiles rewards.

First up, passengers who earn 125,000 miles (or fly 140 segments per calendar year) will receive Diamond Medallion Status, membership to Delta Sky Club, 125% mileage bonus for select purchases, and fee waivers for baggage and award tickets. Platinum and Gold Medallion members are also exempt from booking fees via telephone, online, or in person.

Delta has also applied a rollover policy to account miles, allowing members to retain whatever miles earned above their particular Medallion status at the end of the year. There's no limit on how many miles you may rollover, so go wild.

For more info on Delta's SkyMile Medallion program, visit Delta.com.